Chevrolet R07
| Chevrolet R07 | |
|---|---|
 A R07 on display in June 2014 at Road America | |
| Overview | |
| Manufacturer | Chevrolet Hendrick Racing Engines ECR Engines |
| Production | 2007–present |
| Layout | |
| Configuration | V8 engine, 90° cylinder angle[1] |
| Displacement | 5.9 L (5,870 cc)[2][3] |
| Cylinder bore | 106.3 mm (4.2 in) |
| Piston stroke | 82.55 mm (3 in) |
| Cylinder block material | Compacted graphite iron[4] |
| Cylinder head material | Aluminum alloy[5] |
| Valvetrain | 16-valve, OHV, two-valves per cylinder |
| Combustion | |
| Fuel system | Electronic Port Fuel Injection (EFI) (Cup) Carburetor (O'Reilly)[6] |
| Management | MES TAG-400i[7] |
| Fuel type | 260 GTX Unleaded provided by Sunoco (2007–2010; still in use in ARCA) E15 Ethanol provided by Sunoco (2011–present)[8] |
| Oil system | Dry sump[9] |
| Output | |
| Power output | 550-950+ hp (410-708 kW) @ 9,000 rpm (depending on displacement.)[10] |
| Torque output | Approx. 510 lb⋅ft (691 N⋅m) @ 4,900 rpm |
| Dimensions | |
| Dry weight | 525 lb (238 kg)[11] |
| Chronology | |
| Predecessor | Chevrolet SB2 (1998–2006)[12] |
The Chevrolet R07 engine is a 5.87-liter, naturally aspirated, V8 racing engine, developed and produced by Chevrolet for NASCAR competition in 2007. Chevrolet has been a highly successful NASCAR engine supplier, scoring 886 Cup Series wins, 582 O'Reilly Series wins, and 298 Truck Series wins, leading the all-time wins as a manufacturer in all 3 series. As of 2026, across the top 2 series, they supply engines to nearly 30 different teams, with notable examples including Hendrick Motorsports, Richard Childress Racing, Spire Motorsports, Trackhouse Racing, and JR Motorsports.[13][14]
Specifications
[edit]- Engine type: Chevrolet V8
- Capacity: 5.87 L (358 cu in)
- HP rating (superspeedway / intermediate / dirt / road-street course / short tracks): 670 hp (500 kW) / 750 hp (559 kW) (2026 rules package)
- Max. RPM: 10,500 rpm
- Weight: 525 lbs. (238 kg)
- Oil system: Dry-sump lubrication
- Camshafts: Solid-roller camshaft
- Valve actuation: Shaft-mounted
- Valve springs: Wire-type
- Cylinder head: 2 valves (titanium) per cylinder
- Fuel injection: MES/NXP Semiconductors/Holley/Bosch 8x high pressure port injectors
- Fuel: 260 GTX Unleaded provided by Sunoco (2007–2010; still in use in ARCA)
E15 Ethanol provided by Sunoco (2011–present) - Lubricants: 0w grade; Mobil 1 Extended Performance (ESP), Pennzoil Platinum, Valvoline Advanced Protection
- Block material: Compacted graphite iron
- Head material: Aluminum alloy
- Crankshaft: Billet steel
- Con rods: Forged steel
- Pistons: Forged aluminum alloy
- Intake systems: Single plenum - aluminum
- Electronic control unit: McLaren Electronics - TAG-400I
- Engine service life: 1,000 miles
- Gearbox: Sequential gearbox, h-pattern
Applications
[edit]- Next Gen Car (2022–present)
- Gen 6 (2013—2021)
- Car of Tomorrow (2007—2012)
- Gen 4 (2007)
- NASCAR O'Reilly Auto Parts Series (2007—present)
- NASCAR Craftsman Truck Series (2007–2018)
References
[edit]- ↑ "The Chevrolet R07 Nascar Sprint Cup Engine: Leading Edge Technology In A Cast-Iron Box". HOT ROD Network. Retrieved July 29, 2026.
- ↑ "Chevy R07 NASCAR Engine - The Future Is Now". MotorTrend. Retrieved July 29, 2026.
- ↑ "Chevrolet R07". Racecar Engineering. Retrieved July 29, 2026.
- ↑ "Turning A NASCAR R07 Engine Into A Serious Street/Strip Package". EngineLabs. Retrieved July 29, 2026.
- ↑ "R07 Racing Cylinder Heads - New Power For Chevrolet". HOT ROD Network. Retrieved July 29, 2026.
- ↑ "GM RACING ANNOUNCES NEW ENGINE". Motorsport. Retrieved July 29, 2026.
- ↑ "The Power Inside NASCAR® Fuel Injection" (PDF). DXP. Retrieved July 29, 2026.
- ↑ "Sunoco Fueled for 15: Celebrating 15 Years of Fueling Victories". NASCAR. Retrieved July 29, 2026.
- ↑ "NASCAR Next Gen race car debuts, brings the sport into the 21st century". Motor Authority. Retrieved July 29, 2026.
- ↑ "GETTING 960 HORSEPOWER OUT OF 397 CUBIC INCHES WITH A NASCAR-SOURCED CHEVROLET R07 ENGINE". Holley Performance.
- ↑ "Engine Wars! F1 vs IndyCar vs Pro Stock vs NASCAR vs Top Fuel". NHRA. Retrieved July 29, 2026.
- ↑ "SB2 Small-Block V8: The Small-Block Nascar is Afraid to Sanction". HOT ROD Network. Retrieved July 29, 2026.
- ↑ "Chevrolet's R07 engine hits 10-year anniversary mark". NASCAR. Retrieved July 29, 2026.
- ↑ "NASCAR CUP SERIES MANUFACTURER STATS & RECORDS". Jayski. Retrieved July 29, 2026.